SW180 series is designed for direct current loads, particularly motors as used in electric vehicles such as industrial trucks, airport tugs, etc. Double breaking main contacts with silver alloy contact tips, which are weld resistant, hard wearing and have excellent conductivity. The range comprises: Single Pole, on/off types (SW180), Double Pole, on/off types (SW190), Single Pole Changeover types (SW181), Single Pole normally closed types (SW185) and paired versions of these for motor reversing (SW182, DC182, and SW192)
SW180B. This is a specific version from the SW180 series. The "B" the single pole types (excluding 'P' versions) can be fitted with permanent magnet blowouts. These enable the contacts to switch D.C. voltages of 48 or higher. Fitting of blowouts makes the contacts polarity sensitive and the Positive markings on the top cover of the contactor must be observed.
SW190AB. This is a specific version from the SW180 series. The SW190 is a Double Pole Single Throw. "A" double circuit normally open, normally closed microswitch can is fitted to this version, which has a DC resistive rating of 5 amperes at 24V. 2. "B" The single pole types (excluding 'P' versions) can be fitted with permanent magnet blowouts. These enable the contacts to switch D.C. voltages of 48 or higher. Fitting of blowouts makes the contacts polarity sensitive and the Positive markings on the top cover of the contactor must be observed.
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